# b-mobile DENWA

> Discounted calling app for b-mobile LTE voice SIM users. (iPhone/iPad app by Japan Communications Inc..)

- Source: https://appshunter.io/ios/app/b-mobile-denwa/id1160120610 (this page in markdown: same URL + `.md`)
- Developer: [Japan Communications Inc.](https://appshunter.io/developer/493542028)
- Category: Utilities
- Price: Free
- Rating: 4.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 17 MB
- Languages: English, Japanese
- Released: 2016-10-04
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/b-mobile-denwa/id1160120610/reviews.md

## What is b?

「b-mobile電話」は、b-mobileおよびb-mobile SのLTE音声付SIMで、通話料が割安にご利用いただけるアプリケーションです。

※発信時にプレフィックス番号が付加されているかご確認ください。プレフィックス番号が付加されない番号は、第三者課金発信の通話料は適用されません。

・「b-mobile電話」による通話で、通話料が半額（10円/30秒）でご利用いただけます。
・今お使いの携帯電話番号をそのまま使用。090、080、070番号がかける相手に表示されます。
・有料オプションサービスとして、「b-mobile電話」による通話が一定の条件で無料となるオプションがあります。

■（b-mobile Sおよびb-mobileスタートSIMをご利用の方）通話5分かけ放題について
・月額費用500円で、「b-mobile電話」による通話が、1回あたり5分まで、無料となるサービスです（超過した場合10円/30秒）。
・お客様専用ページ「My b-mobile」からのお申込みが必要です。

■（b-mobileをご利用の方）通話3分定額オプションについて
・月額費用500円で、「b-mobile電話」による通話が、1回あたり3分まで、かつ、1日あたり50回まで、無料となるサービスです（超過した場合10円/30秒）。
・お客様専用ページ「My b-mobile」からのお申込みが必要です。

## Key features

- Reduced call rates
- Retain your current phone number
- Caller ID displayed
- Optional free call services
- Half-price calls (10 JPY/30 sec)

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/b-mobile-denwa/id1160120610/reviews.md

### 4/5 — Okay

*2016-10-14, version 1.0.0*

「よく使う項目」の機能ががあればいいと思います。

## Frequently asked questions about b

### What is b-mobile DENWA?

b-mobile DENWA is an application that provides discounted call rates for b-mobile and b-mobile S LTE voice SIM users. It allows you to make calls at a lower per-second rate and retain your existing phone number.

### How much does b-mobile DENWA cost?

The b-mobile DENWA application itself is free to download and use. There are optional paid services available for unlimited calls up to a certain duration.

### What are the optional services for b-mobile DENWA?

There are two optional services: '5-minute unlimited calls' for b-mobile S users at 500 JPY/month, and '3-minute fixed-rate calls' for b-mobile users at 500 JPY/month. Both offer free calls up to the specified duration per call/day.

### Can I keep my current phone number with b-mobile DENWA?

Yes, you can use your current mobile phone number with b-mobile DENWA. The 090, 080, or 070 number you use will be displayed to the person you are calling.

### What is the call rate with b-mobile DENWA?

With b-mobile DENWA, calls are charged at half the standard rate, which is 10 JPY per 30 seconds. This rate applies unless you exceed the limits of the optional free call services.

### What devices does b-mobile DENWA support?

b-mobile DENWA is available for iPhone and iPod devices. It is designed to work with b-mobile and b-mobile S LTE voice SIMs.

### How often is b-mobile DENWA updated?

The latest version of b-mobile DENWA is 1.3.7, which was last updated on December 10, 2020. Updates typically include bug fixes and performance improvements.

### What is the age rating for b-mobile DENWA?

b-mobile DENWA has an age rating of 4+. This indicates it is suitable for users aged 4 and above, with no mature content.

## Version history (last 5 releases)

### 1.3.7 — 2020-12-10

・軽微な不具合の修正を行いました。

### 1.3.6 — 2019-11-13

・iOS 13に対応しました。
・通話品質を改善しました。

[ご注意]
・バージョン1.3.6にアップデートすることによって、発信時に付加されるプレフィックス番号が「00328246 / 00324146」から「0063 / 006751」に変更になります。
・0063を利用した他社の第三者課金サービスのご契約状況によって、b-mobile電話がご利用できなくなる場合があります。

### 1.3.5 — 2018-09-27

- Miner update : When user make many phone calls, iPhone's movement became slow has been fixed.

### 1.3.4 — 2018-03-16

- Improved sound quality when calling from SoftBank SIM.
- Made improvement to show the caller number when calling to home phone.
- Changed prefix number for domestic calls.

### 1.3.3 — 2018-02-09

- Made design improvement on App icon and to keypad interface.
- Minor bug fixes in Favorite.

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## More apps by Japan Communications Inc.

- [日本通信アプリ](https://appshunter.io/ios/app/id1659613825)

All apps by Japan Communications Inc.: https://appshunter.io/developer/493542028

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*